VC/MFC 键盘消息的截取与响应

在MFC(Microsoft Foundation Class)对响应消息进行了封装，

可以通过重载虚函数PreTranslateMessage()对所关心的消息进行截取与响应：

以下对截取与响应键盘 Enter 消息的截取与响应

这是对话框的响应键盘 Enter 消息方式：
BOOL C**Dlg::PreTranslateMessage(MSG* pMsg)
{
 // TODO: 在此添加专用代码和/或调用基类
 //判断是否为键盘消息
 if (WM_KEYFIRST <= pMsg->message && pMsg->message <= WM_KEYLAST)
 {
  //判断是否按下键盘Enter键
  if(pMsg->wParam==VK_RETURN)
  {

   //Do anything what you want to
   return TRUE;
  }
 }
 return CDialog::PreTranslateMessage(pMsg);
}

这是View视图类响应键盘 Enter 消息的方式：

BOOL C**View::PreTranslateMessage(MSG* pMsg)
{
　if (WM_KEYFIRST <= pMsg->message && pMsg->message <= WM_KEYLAST)
　{
　　if(pMsg->wParam==VK_RETURN )
　　{

      //Do anything you want here

       return TRUE;

    }
　}
　return CFormView::PreTranslateMessage(pMsg);
}

　　在上面的代码中，首先将pMsg->message所表示的消息同WM_KEYFIRST 和WM_KEYLAST比较，确定是键盘消息，然后通过消息参数pMsg->wParam的值来判断是否是回车键（VK_RETURN，虚拟键码可以下面相关资料中查到）。

    常用的Delete键的虚拟键码为：VK_DELETE

    其他相关的自己慢慢找吧，呵呵。

#define VK_LBUTTON        0x01
#define VK_RBUTTON        0x02
#define VK_CANCEL         0x03
#define VK_MBUTTON        0x04   

#if(_WIN32_WINNT >= 0x0500)
#define VK_XBUTTON1       0x05   
#define VK_XBUTTON2       0x06   
#endif

#define VK_BACK           0x08
#define VK_TAB            0x09

#define VK_CLEAR          0x0C
#define VK_RETURN         0x0D

#define VK_SHIFT          0x10
#define VK_CONTROL        0x11
#define VK_MENU           0x12
#define VK_PAUSE          0x13
#define VK_CAPITAL        0x14

#define VK_KANA           0x15
#define VK_HANGEUL        0x15 
#define VK_HANGUL         0x15
#define VK_JUNJA          0x17
#define VK_FINAL          0x18
#define VK_HANJA          0x19
#define VK_KANJI          0x19

#define VK_ESCAPE         0x1B

#define VK_CONVERT        0x1C
#define VK_NONCONVERT     0x1D
#define VK_ACCEPT         0x1E
#define VK_MODECHANGE     0x1F

#define VK_SPACE          0x20
#define VK_PRIOR          0x21
#define VK_NEXT           0x22
#define VK_END            0x23
#define VK_HOME           0x24
#define VK_LEFT           0x25
#define VK_UP             0x26
#define VK_RIGHT          0x27
#define VK_DOWN           0x28
#define VK_SELECT         0x29
#define VK_PRINT          0x2A
#define VK_EXECUTE        0x2B
#define VK_SNAPSHOT       0x2C
#define VK_INSERT         0x2D
#define VK_DELETE         0x2E
#define VK_HELP           0x2F

#define VK_LWIN           0x5B
#define VK_RWIN           0x5C
#define VK_APPS           0x5D

#define VK_SLEEP          0x5F

#define VK_NUMPAD0        0x60
#define VK_NUMPAD1        0x61
#define VK_NUMPAD2        0x62
#define VK_NUMPAD3        0x63
#define VK_NUMPAD4        0x64
#define VK_NUMPAD5        0x65
#define VK_NUMPAD6        0x66
#define VK_NUMPAD7        0x67
#define VK_NUMPAD8        0x68
#define VK_NUMPAD9        0x69
#define VK_MULTIPLY       0x6A
#define VK_ADD            0x6B
#define VK_SEPARATOR      0x6C
#define VK_SUBTRACT       0x6D
#define VK_DECIMAL        0x6E
#define VK_DIVIDE         0x6F
#define VK_F1             0x70
#define VK_F2             0x71
#define VK_F3             0x72
#define VK_F4             0x73
#define VK_F5             0x74
#define VK_F6             0x75
#define VK_F7             0x76
#define VK_F8             0x77
#define VK_F9             0x78
#define VK_F10            0x79
#define VK_F11            0x7A
#define VK_F12            0x7B
#define VK_F13            0x7C
#define VK_F14            0x7D
#define VK_F15            0x7E
#define VK_F16            0x7F
#define VK_F17            0x80
#define VK_F18            0x81
#define VK_F19            0x82
#define VK_F20            0x83
#define VK_F21            0x84
#define VK_F22            0x85
#define VK_F23            0x86
#define VK_F24            0x87

#define VK_NUMLOCK        0x90
#define VK_SCROLL         0x91

#define VK_OEM_NEC_EQUAL  0x92   // '=' key on numpad

#define VK_OEM_FJ_JISHO   0x92   // 'Dictionary' key
#define VK_OEM_FJ_MASSHOU 0x93   // 'Unregister word' key
#define VK_OEM_FJ_TOUROKU 0x94   // 'Register word' key
#define VK_OEM_FJ_LOYA    0x95   // 'Left OYAYUBI' key
#define VK_OEM_FJ_ROYA    0x96   // 'Right OYAYUBI' key

#define VK_LSHIFT         0xA0
#define VK_RSHIFT         0xA1
#define VK_LCONTROL       0xA2
#define VK_RCONTROL       0xA3
#define VK_LMENU          0xA4
#define VK_RMENU          0xA5

#if(_WIN32_WINNT >= 0x0500)
#define VK_BROWSER_BACK        0xA6
#define VK_BROWSER_FORWARD     0xA7
#define VK_BROWSER_REFRESH     0xA8
#define VK_BROWSER_STOP        0xA9
#define VK_BROWSER_SEARCH      0xAA
#define VK_BROWSER_FAVORITES   0xAB
#define VK_BROWSER_HOME        0xAC

#define VK_VOLUME_MUTE         0xAD
#define VK_VOLUME_DOWN         0xAE
#define VK_VOLUME_UP           0xAF
#define VK_MEDIA_NEXT_TRACK    0xB0
#define VK_MEDIA_PREV_TRACK    0xB1
#define VK_MEDIA_STOP          0xB2
#define VK_MEDIA_PLAY_PAUSE    0xB3
#define VK_LAUNCH_MAIL         0xB4
#define VK_LAUNCH_MEDIA_SELECT 0xB5
#define VK_LAUNCH_APP1         0xB6
#define VK_LAUNCH_APP2         0xB7

#endif

#define VK_OEM_1          0xBA   // ';:' for US
#define VK_OEM_PLUS       0xBB   // '+' any country
#define VK_OEM_COMMA      0xBC   // ',' any country
#define VK_OEM_MINUS      0xBD   // '-' any country
#define VK_OEM_PERIOD     0xBE   // '.' any country
#define VK_OEM_2          0xBF   // '/?' for US
#define VK_OEM_3          0xC0   // '`~' for US

#define VK_OEM_4          0xDB  //  '[{' for US
#define VK_OEM_5          0xDC  //  '\|' for US
#define VK_OEM_6          0xDD  //  ']}' for US
#define VK_OEM_7          0xDE  //  ''"' for US
#define VK_OEM_8          0xDF

#define VK_OEM_AX         0xE1  //  'AX' key on Japanese AX kbd
#define VK_OEM_102        0xE2  //  "<>" or "\|" on RT 102-key kbd.
#define VK_ICO_HELP       0xE3  //  Help key on ICO
#define VK_ICO_00         0xE4  //  00 key on ICO

#if(WINVER >= 0x0400)
#define VK_PROCESSKEY     0xE5
#endif

#define VK_ICO_CLEAR      0xE6